Export to CSV file

[kukiwakame]

I want to output the results of the EM simulation "EM U(t)" as a csv file, but I can't save it.
Please tell me the reason.

Thank you in advance.

# Adding a new PlotViewer
  inputs = [em_sensor_extractor.Outputs["EM U(t)"]]
  plot_viewer = analysis.viewers.PlotViewer(inputs=inputs)
  plot_viewer.visible = True
  plot_viewer.ExportToCSV("C:/Temp/test.csv")
  plot_viewer.UpdateAttributes()
  document.AllAlgorithms.Add(plot_viewer)